Home / 130,507,693.47-180,105,238.64-71,774,904.51

Finding the Fourth Proportional to 130,507,693.47, 180,105,238.64 and 71,774,904.51

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Solution

The fourth proportional to 130,507,693.47, 180,105,238.64 and 71,774,904.51 is: 99,051,909.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,507,693.47 : 180,105,238.64 = 71,774,904.51 : x
  2. Step 2: Convert to fraction form
    130,507,693.47/180,105,238.64 = 71,774,904.51/x
  3. Step 3: Cross multiply
    130,507,693.47x = 180,105,238.64 × 71,774,904.51
  4. Step 4: Simplify right side
    130,507,693.47x = 12,927,036,304,777,888
  5. Step 5: Solve for x
    x = 12,927,036,304,777,888/130,507,693.47
  6. Step 6: Final answer
    x = 99,051,909.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.