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Finding the Fourth Proportional to 145,931.80, 218,897.70 and 93,443.80

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Solution

The fourth proportional to 145,931.80, 218,897.70 and 93,443.80 is: 140,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,931.80 : 218,897.70 = 93,443.80 : x
  2. Step 2: Convert to fraction form
    145,931.80/218,897.70 = 93,443.80/x
  3. Step 3: Cross multiply
    145,931.80x = 218,897.70 × 93,443.80
  4. Step 4: Simplify right side
    145,931.80x = 20,454,632,899.26
  5. Step 5: Solve for x
    x = 20,454,632,899.26/145,931.80
  6. Step 6: Final answer
    x = 140,165.70

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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.