Home / 145,237.60-217,510.80-89,250.40

Finding the Fourth Proportional to 145,237.60, 217,510.80 and 89,250.40

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Solution

The fourth proportional to 145,237.60, 217,510.80 and 89,250.40 is: 133,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,237.60 : 217,510.80 = 89,250.40 : x
  2. Step 2: Convert to fraction form
    145,237.60/217,510.80 = 89,250.40/x
  3. Step 3: Cross multiply
    145,237.60x = 217,510.80 × 89,250.40
  4. Step 4: Simplify right side
    145,237.60x = 19,412,925,904.32
  5. Step 5: Solve for x
    x = 19,412,925,904.32/145,237.60
  6. Step 6: Final answer
    x = 133,663.22

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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.