Home / 145,152,030.40-217,728,045.60-128,145,918.40

Finding the Fourth Proportional to 145,152,030.40, 217,728,045.60 and 128,145,918.40

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Solution

The fourth proportional to 145,152,030.40, 217,728,045.60 and 128,145,918.40 is: 192,218,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,152,030.40 : 217,728,045.60 = 128,145,918.40 : x
  2. Step 2: Convert to fraction form
    145,152,030.40/217,728,045.60 = 128,145,918.40/x
  3. Step 3: Cross multiply
    145,152,030.40x = 217,728,045.60 × 128,145,918.40
  4. Step 4: Simplify right side
    145,152,030.40x = 27,900,960,364,849,080
  5. Step 5: Solve for x
    x = 27,900,960,364,849,080/145,152,030.40
  6. Step 6: Final answer
    x = 192,218,877.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.