Home / 145,152,030.65-217,728,045.98-128,145,918.65

Finding the Fourth Proportional to 145,152,030.65, 217,728,045.98 and 128,145,918.65

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Solution

The fourth proportional to 145,152,030.65, 217,728,045.98 and 128,145,918.65 is: 192,218,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,152,030.65 : 217,728,045.98 = 128,145,918.65 : x
  2. Step 2: Convert to fraction form
    145,152,030.65/217,728,045.98 = 128,145,918.65/x
  3. Step 3: Cross multiply
    145,152,030.65x = 217,728,045.98 × 128,145,918.65
  4. Step 4: Simplify right side
    145,152,030.65x = 27,900,960,467,335,812
  5. Step 5: Solve for x
    x = 27,900,960,467,335,812/145,152,030.65
  6. Step 6: Final answer
    x = 192,218,877.98

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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.