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Finding the Fourth Proportional to 145,812.40, 218,718.60 and 93,281.20

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Solution

The fourth proportional to 145,812.40, 218,718.60 and 93,281.20 is: 139,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,812.40 : 218,718.60 = 93,281.20 : x
  2. Step 2: Convert to fraction form
    145,812.40/218,718.60 = 93,281.20/x
  3. Step 3: Cross multiply
    145,812.40x = 218,718.60 × 93,281.20
  4. Step 4: Simplify right side
    145,812.40x = 20,402,333,470.32
  5. Step 5: Solve for x
    x = 20,402,333,470.32/145,812.40
  6. Step 6: Final answer
    x = 139,921.80

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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.