Home / 145,347.60-218,021.40-103,357.20

Finding the Fourth Proportional to 145,347.60, 218,021.40 and 103,357.20

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Solution

The fourth proportional to 145,347.60, 218,021.40 and 103,357.20 is: 155,035.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,347.60 : 218,021.40 = 103,357.20 : x
  2. Step 2: Convert to fraction form
    145,347.60/218,021.40 = 103,357.20/x
  3. Step 3: Cross multiply
    145,347.60x = 218,021.40 × 103,357.20
  4. Step 4: Simplify right side
    145,347.60x = 22,534,081,444.08
  5. Step 5: Solve for x
    x = 22,534,081,444.08/145,347.60
  6. Step 6: Final answer
    x = 155,035.80

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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.